Show PDB file:   
         Plain Text   HTML   (compressed file size)
QuickSearch:   
by PDB,NDB,UniProt,PROSITE Code or Search Term(s)  
(-)NMR Structure - model 1
(-)NMR Structure - all models
collapse expand < >
Image NMR Structure - model 1
NMR Structure - model 1  (Jmol Viewer)
Image NMR Structure - all models
NMR Structure - all models  (Jmol Viewer)

(-) Description

Title :  NMR STRUCTURE OF THE POTASSIUM CHANNEL FRAGMENT L45 IN MICELLES
 
Authors :  O. Ohlenschlager, H. Hojo, R. Ramachandran, M. Gorlach, P. I. Haris
Date :  08 Dec 00  (Deposition) - 05 Jun 02  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A
Keywords :  Alpha-Helix, Amphipathic, Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  O. Ohlenschlager, H. Hojo, R. Ramachandran, M. Gorlach, P. I. Haris
Three-Dimensional Structure Of The S4-S5 Segment Of The Shaker Potassium Channel.
Biophys. J. V. 82 2995 2002
PubMed-ID: 12023222
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - VOLTAGE-GATED POTASSIUM CHANNEL PROTEIN
    ChainsA
    FragmentL45 SEGMENT OF THE SHAKER POTASSIUM CHANNEL
    Organism CommonFRUIT FLY
    Organism ScientificDROSOPHILA MELANOGASTER
    Organism Taxid7227

 Structural Features

(-) Chains, Units

  
NMR Structure 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1HO2)

(-) Sites  (0, 0)

(no "Site" information available for 1HO2)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1HO2)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1HO2)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1HO2)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1HO2)

(-) Exons   (0, 0)

(no "Exon" information available for 1HO2)

(-) Sequences/Alignments

NMR Structure
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:20
 aligned with KCNAS_DROME | P08510 from UniProtKB/Swiss-Prot  Length:655

    Alignment length:20
                                   387       397
          KCNAS_DROME   378 HSKGLQILGRTLKASMRELG 397
               SCOP domains d1ho2a_ A:           SCOP domains
               CATH domains -------------------- CATH domains
               Pfam domains -------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) -------------------- SAPs(SNPs)
                    PROSITE -------------------- PROSITE
                 Transcript -------------------- Transcript
                 1ho2 A   1 HSKGLQILGRTLKASMRELG  20
                                    10        20

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

NMR Structure
(-)
Class: Peptides (792)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 1HO2)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1HO2)

(-) Gene Ontology  (31, 31)

NMR Structure(hide GO term definitions)
Chain A   (KCNAS_DROME | P08510)
molecular function
    GO:0005251    delayed rectifier potassium channel activity    Enables the transmembrane transfer of a potassium ion by a delayed rectifying voltage-gated channel. A delayed rectifying current-voltage relation is one where channel activation kinetics are time-dependent, and inactivation is slow.
    GO:0005216    ion channel activity    Enables the facilitated diffusion of an ion (by an energy-independent process) by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism. May be either selective (it enables passage of a specific ion only) or non-selective (it enables passage of two or more ions of same charge but different size).
    GO:0005267    potassium channel activity    Enables the facilitated diffusion of a potassium ion (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism.
    GO:0022843    voltage-gated cation channel activity    Enables the transmembrane transfer of a cation by a voltage-gated channel. A cation is a positively charged ion. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
    GO:0005244    voltage-gated ion channel activity    Enables the transmembrane transfer of an ion by a voltage-gated channel. An ion is an atom or group of atoms carrying an electric charge by virtue of having gained or lost one or more electrons. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
    GO:0005249    voltage-gated potassium channel activity    Enables the transmembrane transfer of a potassium ion by a voltage-gated channel. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
biological process
    GO:0001508    action potential    A process in which membrane potential cycles through a depolarizing spike, triggered in response to depolarization above some threshold, followed by repolarization. This cycle is driven by the flow of ions through various voltage gated channels with different thresholds and ion specificities.
    GO:0048675    axon extension    Long distance growth of a single axon process involved in cellular development.
    GO:0048150    behavioral response to ether    Any process that results in a change in the behavior of an organism as a result of an ether stimulus.
    GO:0007619    courtship behavior    The behavioral interactions between organisms for the purpose of attracting sexual partners.
    GO:0009584    detection of visible light    The series of events in which a visible light stimulus is received by a cell and converted into a molecular signal. A visible light stimulus is electromagnetic radiation that can be perceived visually by an organism; for organisms lacking a visual system, this can be defined as light with a wavelength within the range 380 to 780 nm.
    GO:0007629    flight behavior    The response to external or internal stimuli that results in the locomotory process of flight. Flight is the self-propelled movement of an organism through the air.
    GO:0006811    ion transport    The directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0008345    larval locomotory behavior    Locomotory behavior in a larval (immature) organism.
    GO:0007611    learning or memory    The acquisition and processing of information and/or the storage and retrieval of this information over time.
    GO:0048047    mating behavior, sex discrimination    The behavior of individuals for the purpose of discriminating between the sexes, for the purpose of finding a suitable mating partner.
    GO:0071805    potassium ion transmembrane transport    A process in which a potassium ion is transported from one side of a membrane to the other.
    GO:0006813    potassium ion transport    The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0007637    proboscis extension reflex    The extension, through direct muscle actions, of the proboscis (the trunk-like extension of the mouthparts on the adult external head) in response to a sugar stimulus.
    GO:0051260    protein homooligomerization    The process of creating protein oligomers, compounds composed of a small number, usually between three and ten, of identical component monomers. Oligomers may be formed by the polymerization of a number of monomers or the depolymerization of a large protein polymer.
    GO:0045187    regulation of circadian sleep/wake cycle, sleep    Any process that modulates the frequency, rate or extent of sleep; a readily reversible state of reduced awareness and metabolic activity that occurs periodically in many animals.
    GO:0034765    regulation of ion transmembrane transport    Any process that modulates the frequency, rate or extent of the directed movement of ions from one side of a membrane to the other.
    GO:0060025    regulation of synaptic activity    Any process that modulates the frequency, rate or extent of synaptic activity, the controlled release of neurotransmitters into the synaptic cleft and their subsequent detection by a postsynaptic cell.
    GO:0050909    sensory perception of taste    The series of events required for an organism to receive a gustatory stimulus, convert it to a molecular signal, and recognize and characterize the signal. Gustation involves the direct detection of chemical composition, usually through contact with chemoreceptor cells. This is a neurological process.
    GO:0030431    sleep    Any process in which an organism enters and maintains a periodic, readily reversible state of reduced awareness and metabolic activity. Usually accompanied by physical relaxation, the onset of sleep in humans and other mammals is marked by a change in the electrical activity of the brain.
    GO:0055085    transmembrane transport    The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other
    GO:0006810    transport    The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
cellular component
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
    GO:0008076    voltage-gated potassium channel complex    A protein complex that forms a transmembrane channel through which potassium ions may cross a cell membrane in response to changes in membrane potential.

 Visualization

(-) Interactive Views

NMR Structure
  Complete Structure
    Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
    WebMol | AstexViewer[tm]@PDBe
(Java Applets, require no local installation except for Java; loading may be slow)
    STRAP
(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    RasMol
(require local installation)
    Molscript (VRML)
(requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)
 
  Ligands, Modified Residues, Ions
(no "Ligands, Modified Residues, Ions" information available for 1ho2)
 
  Sites
(no "Sites" information available for 1ho2)
 
  Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 1ho2)
 

(-) Still Images

Jmol
  protein: cartoon or spacefill or dots and stick; nucleic acid: cartoon and stick; ligands: spacefill; active site: stick
Molscript
  protein, nucleic acid: cartoon; ligands: spacefill; active site: ball and stick

 Databases and Analysis Tools

(-) Databases

Access by PDB/NDB ID
  1ho2
    Family and Domain InformationProDom | SYSTERS
    General Structural InformationGlycoscienceDB | MMDB | NDB | OCA | PDB | PDBe | PDBj | PDBsum | PDBWiki | PQS | PROTEOPEDIA
    Orientation in MembranesOPM
    Protein SurfaceSURFACE
    Secondary StructureDSSP (structure derived) | HSSP (homology derived)
    Structural GenomicsGeneCensus
    Structural NeighboursCE | VAST
    Structure ClassificationCATH | Dali | SCOP
    Validation and Original DataBMRB Data View | BMRB Restraints Grid | EDS | PROCHECK | RECOORD | WHAT_CHECK
 
Access by UniProt ID/Accession number
  KCNAS_DROME | P08510
    Comparative Protein Structure ModelsModBase
    Genomic InformationEnsembl
    Protein-protein InteractionDIP
    Sequence, Family and Domain InformationInterPro | Pfam | SMART | UniProtKB/SwissProt
 
Access by Enzyme Classificator   (EC Number)
  (no 'Enzyme Classificator' available)
    General Enzyme InformationBRENDA | EC-PDB | Enzyme | IntEnz
    PathwayKEGG | MetaCyc
 
Access by Disease Identifier   (MIM ID)
  (no 'MIM ID' available)
    Disease InformationOMIM
 
Access by GenAge ID
  (no 'GenAge ID' available)
    Age Related InformationGenAge

(-) Analysis Tools

Access by PDB/NDB ID
    Domain InformationXDom
    Interatomic Contacts of Structural UnitsCSU
    Ligand-protein ContactsLPC
    Protein CavitiescastP
    Sequence and Secondary StructurePDBCartoon
    Structure AlignmentSTRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    Structure and Sequence BrowserSTING
 
Access by UniProt ID/Accession number
  KCNAS_DROME | P08510
    Protein Disorder PredictionDisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        KCNAS_DROME | P085101ho7

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 1HO2)